70 ILLINOIS BIOLOGICAL MONOGRAPHS [308 



CERATOMYXA DREPANOPSETTAE Awerinzew 



[Figs. 34 to 39] 



1907 Ceratomyxa sp. Awerinzew 1907 : 832-833 



1908 Ceratomyxa drepanopsettae Awerinzew 1908 : 1-41, 45-47 



1909 Ceratomyxa drepanopsettae Awerinzew 1909 : 74-112 



1912 Ceratomyxa drepanopsettae Auerbach 1912 : 44-45 

 1918 Ceratomyxa drepanopsettae Kudo 1918 : 14-15 



Habitat: Gall-bladder of Pleuronectes platessa, P. flesus, Drepanopsetta 

 plattessoides, Hippoglossus vulgaris, Hippoglossoides limandoides and 

 Paralichthys dentatus; Murmankuste, Kabelvaag, Rorvik, Tjomo, Woods 

 Hole (August, September). 



Vegetative form: Polymorphous. Usually very much elongated and 

 slender forms. Protoplasm differentiated. Endoplasm coarsely granular. 

 Pseudopodia lobose and filiform (2 to 3n), with which the trophozoites 

 attach themselves to the epithelium of the bladder. Disporous. 



Spore: Curved toward the posterior side. Shell with rounded ends. 

 Valves almost always unequally built. Dimensions: breadth 50 to 80/*. 

 Auerbach's form: Form variable. Size: sutural diameter about 12 to 

 14/*, breadth about 56/x, diameter of polar capsule about 4 to 6/i, length of 

 the cavity in which the sporoplasm is located about 34/x. Kudo's form: 

 Variable. Sutural diameter 8 to lO/z, average breadth 64^i, diameter of 

 polar capsule 6ju. 



CERATOMYXA TYLOSURI Awerinzew 

 [Figs. 40 and 41] 



1913 Ceratomyxa lylosuri i.\werinzew 1913a : 153 



Habitat: Gall-bladder of Tylosiirus schismatorhynchus; Lorenfo 

 Marques, Delagoa Bay (Africa). 



Vegetative form: Large, irregular, disc-like or large ameboid, with 

 blunt lobose pseudopodia and highly granular protoplasm. 



Spore: Large. The anterior edge arch-shape, while the posterior edge 

 has two small horns which are located symmetrically to the sutural line. 

 Polar capsules elongated and are separated from binuclear sporoplasm by a 

 special membrane. Rarely spore with three polar capsules. Dimensions 

 breadth 124 to 140)u, sutural diameter 40 to 45^, thickness 25 to SOfx. 



CERATOMYXA (?) SPARI Awerinzew 

 [Figs. 42 and 43] 

 1913 Ceratomyxa (?) sparl Awerinzew 1913a : 153-154 



Habitat: Gall-bladder of Spar us berda; Lorenfo Marques, Delagoa 

 Bay (x\frica). 



